초록 ▼

A single stage centrifugal compressor is disclosed having a drive shaft with two thrust bearing collars disposed in a casing. The thrust collars are coupled to two sets of pads tiltingly engaged to two respective base plates. One or both of these base plates are coupled to the casing by a resilient

A single stage centrifugal compressor is disclosed having a drive shaft with two thrust bearing collars disposed in a casing. The thrust collars are coupled to two sets of pads tiltingly engaged to two respective base plates. One or both of these base plates are coupled to the casing by a resilient member. This resilient member, by deflecting with the load allows the force applied to the thrust bearings to be balanced between the thrust bearings. It may be formed as two arcuate portions extending partially around the drive shaft or as a single ring. It may be formed as an annular portion with slots extending substantially radially outward from the rotational axis of the drive shaft outward to an outer surface facing away from the drive shaft, or may be made of two substantially parallel plates with an elastomeric layer sandwiched in between. The elastomeric layer may be either a single solid sheet or several elastomeric elements separated by gaps that allow the elastomer to expand outward when compressed.

대표청구항 ▼

[ The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:] [1.] A single stage compressor comprising:a compressor casing;a drive shaft disposed within the casing rotationally supported by the casing and having a first end extending out of the c

[ The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:] [1.] A single stage compressor comprising:a compressor casing;a drive shaft disposed within the casing rotationally supported by the casing and having a first end extending out of the casing and adapted to be coupled to a rotational power source;an impeller coupled to the drive shaft and disposed within the casing;first and second thrust collars extending outward from the drive shaft;first and second sets of tilting thrust bearing pads, each set radially disposed about the drive shaft such that the first set of tilting pads slidingly engages the first thrust collar, and the second set of pads slidingly engages the second thrust collar;first and second base plates extending around the drive shaft and coupled to the respective first and second sets of pads whereby each of said set of pads tilts with respect to its respective base plate; anda first resilient member disposed around the drive shaft and coupled between the first base plate and the casing, andwherein the resilient member includes:first and second annular plates; andan elastomeric layer disposed between the first and second annular plates.